Pin-remover.



0. Z. SMITH.

PIN REMOVER.

APPLICATION FILED JAN.19,1911.

Patented Mar. 5, 1912;

licarin ELAEt-ENCE ZENO SMITH, OF ATLANTA, GEORGIA.

PIN-REMOVER.

Specification of Letters Patent.

Application filed January 19, 1911. Serial No. 603,571.

Patented Mar. 1912.;

element will be ln Ovd endwise when the i handles are pressed. whereby anobject en lo ail "t shown that l, CLARENCE Z. SMITH, a

20. mm it /tag concern i l ".1 tl c United States, and resident of rtlama, county of Fulton, State of Georgia, have invented certain new and-useful lmnnents in Pin-Removers, of which the lg is a specification" llhis nvcn'tion relates to tools and has reference to that class of tools known as pin removers.

prcvi ion a tool particularly adapted for :no cotter pins from the parts of mainery, and particularly from relatively valve shafts on the motors of vehicles, i. -thont danger of distorting the shafts.

Another object is the provislon of a tool, which may be operated to remove a cotter pin analogous device while in various po-- .1 with respect to the pin.

further object is the provision of a tool to spread and clcnch. the limbs of the cotter pin after the latter has been seated.

still further object the provision of a tool which adapted to engage a clenched cotter pin and draw the same through its seat withoutthe usual necessity of first bending the limbs of the pin parallel to each and other objects will be better unstood from the following description connection with the accompanying drawing. in'which: ,t

' l 'ure l a side elevation of the devie shon no i t a gplied in one position to remove *oiterpm. Fi 2 is a similar View partly in 'on. Fig. i is a detail of one of the members positioned to initially oer talr spread the limbs the pin. Fig. is a detail of other bearing member positioned to further incr ase the spreading or" the limbs oi the cotter pin preparatory to clenching); the same. F is an end elevation of the device sh. wing the same posiled to clench a limb of the cotter pin.

. (3 is a detail side elevation of the bearr to that shown in Fig: l. r

tool comprises handle members a. and inv-har or extracting member a, bearfhc pllllllly OUJBCl; ot the invention 1s the in end portion of the device showing it 2115- 1 X in 1 but in a position at right gaged by one end of the draw-baror extractmg element will be moved therewith. v The handle Z) is made preferably of a sine tree end of the bearing member 8 is sharpened as shown at 9, for a purposeto be d escribed later. I

The handle member a is preferably of channeled steel orits' equivalent and at one end is bifurcated to provide cars 10 and 11' which bear on the opposite faces of the oil? set 7. The cars 10 and 11 have alining openings which register with a transverse opening in the offset 7, theseopenings receiving-a pivot pin 12 which may be secured in any preferred manner such as by nuts 13.

.glc piece of channeled steel, and comprises a' The draw-bar ,or extracting member 0' slides in the handle 6 and between the bear ing members 6 and S, the said member 0 being recessed transversely on one side and-adjacent to its outer end as shown at 15, the outer side of said recess comprisingan engaging nose or book 16. The opposite end of the member 0 terminates in an inwardly extending finger piece 17 whichprovides a finger-hold when the member is to be moved in surface of the member (1 between its middle and the finger-hold 17 is provided with a plurality of ratchet teeth 18. I

The pawl has one end pivotedbetween the sides of the handle member a at a point adjacent to the pivot pin 19. This pawl is pressed by a spring'lQ carried by the handle a, so that its free or engaging end will ongage with the ratchet teeth 18. 7

With this construction it will be manifest that when the parts are positioned as shown in Figs. 1 and 2, by pressing the handles a and b, the latter will turn on their. pivot 12 and at the same time the pawl will engage one of the 'teet-h'lS and move the member a between the bearing members 6 and 8. When pressure on the handles is released the handles will move outwardly under the: action of the spring 19, the pawl overriding one direction. That portion of the inner.

the teeth 18, whereby the parts w ll be positioned, when pressure is again applied thereto, to move the member in the manner just described. It will be further observed that with this construct-ion a step by step movement will. be imparted to the member 0. In order to yieldingly hold the member 0 1, against movement opposite to the movement imparted thereto by the pawl f, and durin i the time the latter is sliding over the teeth 18, a spring 23 is employed. One end of this element is secured to the ofiset 7 and the op-.

posite end curves inwardly and normally bears on the adjacent surface of the mem her 0.

In use, and assuming the parts are positioned as shown in Fig. 2, the pawl f is raised from engagement with the teeth 18 and the engaging end of the member 0 is moved outwardly and beyond the extremities of the bearing members 6 and 8 by pressing on the portion 17. The nose 16 is then inserted through the eye 20 of the cotter pin and the handles operated 1n the manner before described, until the extremities of the bearing members 6 and 8 bear,

on the object retained by the pin, as shown in Fig. 1, whereupon continued movement of the handles-a and b will further move the draw-bar to pull the pin from its seat. Inasmuch as the material of which most cotter pins are made is comparatively light, and the leverage produced on the member 0 is comparatively great, it will be seen' pins are assembled. with parts arranged in.

spaces whose width is less than the length of the tool.. I have found with the presentconstruction that the tool will operate equally as well when in a position at right angles to the pin as shown in Fig. 6, as when alining with the pin as shown in Fig. 1.. When the tool is to be used as shown in Fig. 6, the part 16 is engaged as before described and the tool turned to a position at right angles to the pin or until the bearing members 6 and-8 get a suitable-purchase onthe nut,-shank, or other object as the casemay be, whereupon the movement of the member a in the manner before described will remove the pin from its seat.

In Fig. 3 I have shown the bearing member 8 initially spreading the limbs 21 and 22 of the pin after the latter has been seated. Owing to the shape of the end 9, the limbs 21 and 22 will-be considerably spread when the member 8 has been forced therebetween. In order to effect further spreading the bearing member 6 is inserted between the,

limbs, as shown in Fig. i, whereupon the limbs Wlll be sprcad t'o the position shown 1n Fig. 5.

In order to clench the limbs, whenever desired, the'limbs are alternately inserted through the recess 15, as shown in Fig. 5, and bent outwardly and around the object. 1

Having thus described the invention, what is claimed'is:

l. The herein described implement for withdrawing cotter pins comprising a body having at one end spaced bearing members, adapted to receive between them the head of a cotter pin, and having its other end handle member from said pin engaging means, and a feed pawl attached to the pivoted handle member and engaging said teeth.

2. The herein described implement for withdrawing cotter pins comprising a body formed with a longitudinally extending groove or channel that extends through one end thereof, a handle member pivotally connected at one end with the body and extending rearwardly over said groove, a toothed draw bar supported in the groove in the body and having at one end means for engaging the head of a cotter pin, and a feed pawl connected to the pivotally mounted handle member and engaging the teeth of the'draw bar. I

The herein described implement for withdrawing cotter pins comprising an elongated body, one end of which is adapted to be placed in contact with the article from which the'pin is-tobe withdrawn, a

toothed draw bar of less length than the body supported by the latter to move longi tudmally thereof and provided at one end with means for engaging with the head of a cotter pin, and a handle member pivetally connected at one end with the body and provided at an intermediate point in its length with a pawl that engages the teeth of the draw bar. v

4. The herein described implement for withdrawing cotter pins comprising a body having one end bifurcated to form two bearing members adapted to receive between them the head of a cotter pin, one ofsa-id spread the limbs of a cotter pin, a toothed that engages the teeth on the draw bar.

5. The herein described implement for withdrawing cotter pins comprising two members, one having one end pivotally connected with ears that project laterally from the other member at an intermediate point in its length a toothed draw bar supported -by one of said members and provided at one end with means for engaging thehead of a cotter pin, and a feed pawl connected with the other said member and engaging the teeth of the draw bar, whereby said bar may be moved longitudinally by rocking the pivotally mounted member about its fulcrum.

6. The herein described implement for withdrawing cotter pins comprising two channeled or longitudinally grooved members of difierent lengths, one having at an intermediate point in its length laterally projectingears to which one end of the other said member is pivoted a toothed draw bar supported in the groove in the longer of said members and extending in vadvance and rear of the said ears, said bar being adaptedto engage the head of a cotter pin, and a pawl pivotally' supported in the groove in the other said member and engaging the teeth on the draw bar.

In testimony whereof I affix my signature in presence of two witnesses.

CLARENCE ZENO SMITH.

Witnesses:

HARoLn G. Ross, W. S. MCKINNEY. 

